Bone crusher



FIG. 1 is a front perspective view of the bone crusher;

FIG. 2 is a left side view, the right side being a mirror image thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof; and

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for an bone crusher, as shown.